Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea0d377c1c47633…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 15:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5fc7198c41e3f4eef35b031a432c7394 SHA-1: b23cdcdba82953d3af233548ee40b1f6fd45ec57 SHA-256: 4ea0d377c1c47633514e5dc20f4b584573809b595bbe1878a57fda4ccc322024
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering free game currency or hacks, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains references to 'Free Robux' and includes URLs that align with the heuristic findings. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/free-robux-no-downloading-apps-game-hack In PDF document text
    • https://privatearrangements.co.nz/public/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/mcpe-116_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-spin_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B6 25496 bytes
SHA-256: a415cb22ae53e2b41e2ce37000a5792821df89c12679cd34601c6da5dffa09a6
font_01_sfnt_off000082ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82ED 19404 bytes
SHA-256: 49b6dfa9b56ae39db803e39cb2f1ecc2093e69bc279e239e32c5359198169209

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